>>733419
>Pleasure can be part of it, but not solely the main reason. The express reasons for the conjugal act are:
>1. Pro-creation
>2. Unity of the marriage
But I think in healthy sex, including in Christian marriage where its between man and wife, there is nothing wrong with getting pleasure from giving your other half pleasure - and looking forward to sex because you know you get to experience this particular pleasure (of giving your wife pleasure) - be intiimate and and share the most phsycially intensely intimate, pleasureable and vulnerable space with this other person. I cannot see a problem with chasing the pleasure of giving your other half pleasure, it seems eminently natural by design (although everything in moderation, ofc as per >>733503)
and good sex is obviously beautifully designed where there's clealy special reciprocality where you seeing your wife turned on and getting pleasure is a turn on which turns you on which turns her on more and then you on more etc. etc. The pleasure of pleasuring the other, of being the cause of them feeling pleasure, again with this most special person in this most intimate and vulnerable states is really not a bad thing, and clearly will give a big fat tick to 'the unity of marriage' box under 'reaons for the conjugal act' you mention above.
Totally opposite though if you're thinking of the other soley as something. dehumanised an object, who's only purpose is to help you get yourself off. I was about to go on a massive rant about porn then but I'll leave it as off topic and too tired to think.
So I would say OP what kind of pleasure do you mean in your question, and what are the motivations of those who you imagine are seeking it.